If you've never played Thief, then I somewhat envy you. I wish I could experience this series again for the first time. This series dared to try something different amidst a world of first person shooters, as they were all the rage in the late '90s and anything else done in first person was unthinkable. In fact, I originally found out about this series because I was an avid Quake player and PlanetQuake put up a review of this game on their site. That is how ingrained first person shooters were in the world of gamers. I was glad I gave this game a shot. The idea of "stealth" gaming was a new concept at that point. Splinter Cell wasn't even a twinkle in anyone's eye yet. But the real surprise was how good of a story the series had. Looking Glass Studios made a masterpiece, and followed it up with another winner (which I hope GOG gets someday too). There is indeed a reason why Yahtzee gave this game a glowing review in his zeropunctuation reviews, and considering most of his reviews are negative, that's saying something. Yes, the graphics are a bit dated. But, if you're on this site, I would assume that would be a minor concern for you. Trust me, you will not regret giving this game and series a try. Like I said, I envy you, the person who has not yet tried this game/series.